Aggregate Centrality Comparison

Rank Correnation - Primal Networks

Compare road centre line centrality to aggregated pavement centrality values by calculating the rank corelation between links.

Additionally, perform related sampels ttest to check for significant differences between values.

Rank Correnation - Dual Networks

Disaggregate Centrality Comparison

Wilcoxon signed rank test - primal

Compare the difference between a pavement links centrallity value and the mean centrality value averaged over all pavement links associated with a road link.

Use Wilcoxon signed rank test to test for significate differences between betweenness centrality difference values between pedestrian network representations. Use this test because samples are related (comparing values for the same links) and can't assume samples are normally distributed (centrality values don't follow normal distribution).

Wilcoxon signed rank test - dual

Plot disaggregate values

By plotting the difference between a pavement link's centrality value and the average value for that road link we can visually inspect which side of the road shortest path flows bias and see whether these biases extend for multiple road links.

Primal Networks

Dual Networks

Plot BC values as a check

Primal networks

Dual networks